Fundamentals of Direct Current and
Electrical Theory UPDATED ACTUAL
Exam Questions and CORRECT Answers
Direct Current (DC) - CORRECT ANSWER - Flows continuously in one direction.
Electromotive Force (EMF) - CORRECT ANSWER - Force causing flow of electrons,
measured in volts.
Electricity - CORRECT ANSWER - Flow of electrons through a conductor.
Coulomb - CORRECT ANSWER - Unit measuring electric charge; 1 Coulomb = 6.28
billion electrons.
Valence Shell - CORRECT ANSWER - Outer electron orbit of an atom.
Friction - CORRECT ANSWER - Static electricity produced by physical contact.
Pressure - CORRECT ANSWER - Voltage generated by piezoelectric crystals under
stress.
Heat - CORRECT ANSWER - Voltage generated by thermocouples from temperature
differences.
Light - CORRECT ANSWER - Voltage generated by solar cells absorbing photons.
Chemical - CORRECT ANSWER - Voltage produced by batteries converting chemical
energy.
, Static Electricity - CORRECT ANSWER - Electricity produced by friction, often
dangerous.
Resistance - CORRECT ANSWER - Opposition to current flow, measured in Ohms (Ω).
Frequency - CORRECT ANSWER - Number of cycles per second, measured in Hertz.
Piezoelectricity - CORRECT ANSWER - Electric potential generated by deformed
crystals.
Alternating Current (AC) - CORRECT ANSWER - Current that reverses direction
periodically.
Magnetism - CORRECT ANSWER - Caused by motion of electric charges.
Capacitance - CORRECT ANSWER - Ability to store electric charge, measured in Farads.
Resistors - CORRECT ANSWER - Devices controlling current flow, converting it to heat.
Inductance - CORRECT ANSWER - Opposition to change in electric current flow.
Transformer - CORRECT ANSWER - Device that increases or decreases AC voltage.
Power - CORRECT ANSWER - Rate of doing work, measured in watts.
Circuit - CORRECT ANSWER - Pathway for electrical current to flow.
Series Circuit - CORRECT ANSWER - Circuit with only one path for current flow.
Electrical Theory UPDATED ACTUAL
Exam Questions and CORRECT Answers
Direct Current (DC) - CORRECT ANSWER - Flows continuously in one direction.
Electromotive Force (EMF) - CORRECT ANSWER - Force causing flow of electrons,
measured in volts.
Electricity - CORRECT ANSWER - Flow of electrons through a conductor.
Coulomb - CORRECT ANSWER - Unit measuring electric charge; 1 Coulomb = 6.28
billion electrons.
Valence Shell - CORRECT ANSWER - Outer electron orbit of an atom.
Friction - CORRECT ANSWER - Static electricity produced by physical contact.
Pressure - CORRECT ANSWER - Voltage generated by piezoelectric crystals under
stress.
Heat - CORRECT ANSWER - Voltage generated by thermocouples from temperature
differences.
Light - CORRECT ANSWER - Voltage generated by solar cells absorbing photons.
Chemical - CORRECT ANSWER - Voltage produced by batteries converting chemical
energy.
, Static Electricity - CORRECT ANSWER - Electricity produced by friction, often
dangerous.
Resistance - CORRECT ANSWER - Opposition to current flow, measured in Ohms (Ω).
Frequency - CORRECT ANSWER - Number of cycles per second, measured in Hertz.
Piezoelectricity - CORRECT ANSWER - Electric potential generated by deformed
crystals.
Alternating Current (AC) - CORRECT ANSWER - Current that reverses direction
periodically.
Magnetism - CORRECT ANSWER - Caused by motion of electric charges.
Capacitance - CORRECT ANSWER - Ability to store electric charge, measured in Farads.
Resistors - CORRECT ANSWER - Devices controlling current flow, converting it to heat.
Inductance - CORRECT ANSWER - Opposition to change in electric current flow.
Transformer - CORRECT ANSWER - Device that increases or decreases AC voltage.
Power - CORRECT ANSWER - Rate of doing work, measured in watts.
Circuit - CORRECT ANSWER - Pathway for electrical current to flow.
Series Circuit - CORRECT ANSWER - Circuit with only one path for current flow.
